[RFC PATCH 3/6] ethdev: decouple VMDq and DCB cofiguration

[Vladimir Medvedkin <vladimir.medvedkin@intel.com>]

Current API expects that VMDq and DCB configuration are interconnected,
which may be true for some HW, but isn't universal. For one, we have a
VMDq+DCB configuration structure, but it is not needed because we already
have separate VMDq and DCB structures, so remove it.

Additionally, tx_adv_conf is currently a union, which makes the above
structure necessary, but again, it is not needed if we make tx_adv_conf a
structure and use separate VMDQ and DCB configurations.

Signed-off-by: Vladimir Medvedkin <vladimir.medvedkin@intel.com>
---
 app/test-pmd/testpmd.c  | 31 +++++++++++++++++++++++++------
 lib/ethdev/rte_ethdev.h | 35 +----------------------------------
 2 files changed, 26 insertions(+), 40 deletions(-)

diff --git a/app/test-pmd/testpmd.c b/app/test-pmd/testpmd.c
index b551140165..b5a7e7b3ee 100644
--- a/app/test-pmd/testpmd.c
+++ b/app/test-pmd/testpmd.c
@@ -4103,10 +4103,14 @@ get_eth_dcb_conf(struct rte_eth_conf *eth_conf, enum dcb_mode_enable dcb_mode,
 	 * given above, and the number of traffic classes available for use.
 	 */
 	if (dcb_mode == DCB_VT_ENABLED) {
-		struct rte_eth_vmdq_dcb_conf *vmdq_rx_conf =
-				&eth_conf->rx_adv_conf.vmdq_dcb_conf;
-		struct rte_eth_vmdq_dcb_tx_conf *vmdq_tx_conf =
-				&eth_conf->tx_adv_conf.vmdq_dcb_tx_conf;
+		struct rte_eth_vmdq_rx_conf *vmdq_rx_conf =
+				&eth_conf->rx_adv_conf.vmdq_rx_conf;
+		struct rte_eth_vmdq_tx_conf *vmdq_tx_conf =
+				&eth_conf->tx_adv_conf.vmdq_tx_conf;
+		struct rte_eth_dcb_conf *dcb_rx_conf =
+				&eth_conf->rx_adv_conf.dcb_rx_conf;
+		struct rte_eth_dcb_conf *dcb_tx_conf =
+				&eth_conf->tx_adv_conf.dcb_tx_conf;
 
 		/* VMDQ+DCB RX and TX configurations */
 		vmdq_rx_conf->enable_default_pool = 0;
@@ -4124,8 +4128,23 @@ get_eth_dcb_conf(struct rte_eth_conf *eth_conf, enum dcb_mode_enable dcb_mode,
 		}
 		for (i = 0; i < RTE_ETH_DCB_NUM_USER_PRIORITIES; i++) {
 			dcb_tc_val = prio_tc_en ? prio_tc[i] : i % num_tcs;
-			vmdq_rx_conf->dcb_tc[i] = dcb_tc_val;
-			vmdq_tx_conf->dcb_tc[i] = dcb_tc_val;
+			dcb_rx_conf->dcb_tc[i] = dcb_tc_val;
+			dcb_tx_conf->dcb_tc[i] = dcb_tc_val;
+		}
+
+		const int bw_share_percent = 100 / num_tcs;
+		const int bw_share_left = 100 - bw_share_percent * num_tcs;
+		for (i = 0; i < num_tcs; i++) {
+			dcb_rx_conf->dcb_tc_bw[i] = bw_share_percent;
+			dcb_tx_conf->dcb_tc_bw[i] = bw_share_percent;
+
+			dcb_rx_conf->dcb_tsa[i] = RTE_ETH_DCB_TSA_ETS;
+			dcb_tx_conf->dcb_tsa[i] = RTE_ETH_DCB_TSA_ETS;
+		}
+
+		for (i = 0; i < bw_share_left; i++) {
+			dcb_rx_conf->dcb_tc_bw[i]++;
+			dcb_tx_conf->dcb_tc_bw[i]++;
 		}
 
 		/* set DCB mode of RX and TX of multiple queues */
diff --git a/lib/ethdev/rte_ethdev.h b/lib/ethdev/rte_ethdev.h
index 1579be5a95..c220760043 100644
--- a/lib/ethdev/rte_ethdev.h
+++ b/lib/ethdev/rte_ethdev.h
@@ -937,39 +937,10 @@ struct rte_eth_dcb_conf {
 	uint8_t dcb_tc_bw[RTE_ETH_DCB_NUM_TCS];
 };
 
-struct rte_eth_vmdq_dcb_tx_conf {
-	enum rte_eth_nb_pools nb_queue_pools; /**< With DCB, 16 or 32 pools. */
-	/** Traffic class each UP mapped to. */
-	uint8_t dcb_tc[RTE_ETH_DCB_NUM_USER_PRIORITIES];
-};
-
 struct rte_eth_vmdq_tx_conf {
 	enum rte_eth_nb_pools nb_queue_pools; /**< VMDq mode, 64 pools. */
 };
 
-/**
- * A structure used to configure the VMDq+DCB feature
- * of an Ethernet port.
- *
- * Using this feature, packets are routed to a pool of queues, based
- * on the VLAN ID in the VLAN tag, and then to a specific queue within
- * that pool, using the user priority VLAN tag field.
- *
- * A default pool may be used, if desired, to route all traffic which
- * does not match the VLAN filter rules.
- */
-struct rte_eth_vmdq_dcb_conf {
-	enum rte_eth_nb_pools nb_queue_pools; /**< With DCB, 16 or 32 pools */
-	uint8_t enable_default_pool; /**< If non-zero, use a default pool */
-	uint8_t default_pool; /**< The default pool, if applicable */
-	uint8_t nb_pool_maps; /**< We can have up to 64 filters/mappings */
-	struct {
-		uint16_t vlan_id; /**< The VLAN ID of the received frame */
-		uint64_t pools;   /**< Bitmask of pools for packet Rx */
-	} pool_map[RTE_ETH_VMDQ_MAX_VLAN_FILTERS]; /**< VMDq VLAN pool maps. */
-	/** Selects a queue in a pool */
-	uint8_t dcb_tc[RTE_ETH_DCB_NUM_USER_PRIORITIES];
-};
 
 /**
  * A structure used to configure the VMDq feature of an Ethernet port when
@@ -1523,16 +1494,12 @@ struct rte_eth_conf {
 				 are defined in implementation of each driver. */
 	struct {
 		struct rte_eth_rss_conf rss_conf; /**< Port RSS configuration */
-		/** Port VMDq+DCB configuration. */
-		struct rte_eth_vmdq_dcb_conf vmdq_dcb_conf;
 		/** Port DCB Rx configuration. */
 		struct rte_eth_dcb_conf dcb_rx_conf;
 		/** Port VMDq Rx configuration. */
 		struct rte_eth_vmdq_rx_conf vmdq_rx_conf;
 	} rx_adv_conf; /**< Port Rx filtering configuration. */
-	union {
-		/** Port VMDq+DCB Tx configuration. */
-		struct rte_eth_vmdq_dcb_tx_conf vmdq_dcb_tx_conf;
+	struct {
 		/** Port DCB Tx configuration. */
 		struct rte_eth_dcb_conf dcb_tx_conf;
 		/** Port VMDq Tx configuration. */
-- 
2.43.0